Volume-13 ~ Issue-10 ~ October 2020

Abstract: Fluorescent carbon quantum dots (CQDs) were hydrothermal synthesized with waste Guilin rice noodles as raw materials. By blending the resulted CQDs with polylactic acid (PLA), fluorescent CQDs/PLA composites was obtained and used for 3D printing. The 3D printing products of the CQDs/PLA composites display blue fluorescence which could be specifically quenching with the existence of Fe3+ ions. Therefore, the 3D printing sensor of CQDs/PLA composites could be used for Fe3+ detection, with a good linearity in the range of 1×10-4–6×10-4mol/L and a lowest limit of detection of 9.61×10-5 mol/L. In addtion, the resulted 3D printed Fe3+ sensor could achieve stability and repeated usage..

Key words: waste rice noodles, CQDs/PLA 3D printing composite, fluorescence quenching, Fe3+ detection

[1] R. Chen, Y. Chen, Z. Wang, Z. Ma, D. Shi, X. Li, H. Zhang, and M. Chen. Photoluminescence and Shape Memory of Poly (Vinyl Alcohol)/ Carbon Dots Hybrid Hydrogel, Polymer Materials Science & Engineering, 33 (10), 2017, 125-129.
[2] A. G. El-Shamy and H. S. S. Zayied. New polyvinyl alcohol/carbon quantum dots (PVA/CQDs) nanocomposite films: Structural, optical and catalysis properties. Synthetic Metals, 259, 2020, 116218.
[3] S. Zhu, Q. Meng, L. Wang, J. Zhang, Y. Song, H. Jin, K. Zhang, H. Sun, H. Wang, and B. Yang. Highly photoluminescent carbon dots for multicolor patterning, sensors, and bioimaging[J]. Angewandte Chemie International Edition, 52 (14), 2013, 3953-3957.
[4] Q. Li, T. Y. Ohulchanskyy, R. Liu, K. Koynov, D. Wu, A. Best, R. Kumar, A. Bonoiu, and P. N. Prasad. Photoluminescent Carbon Dots as Biocompatible Nanoprobes for Targeting Cancer Cells in Vitro. The Journal of Physical Chemistry C 114(28), 2010, 12062-12068.
[5] W. D. Li, Y. Liu, B. Y.Wang, H. Q. Song, Z. Y. Liu, S. Y. Lu, and B. Yang. Kilogram-scale synthesis of carbon quantum dots for hydrogen evolution, sensing and bioimaging. Chinese Chemical Letters, 30 (12), 2019, 2323-2327.

Abstract: Some complexes of Pd(II) , Ni(II) , Hg(II) ,Cu(II) and Pb(II) with 1 – substituted phenyltetrazoline – 5 – thione in acidic medium are taken to know its biological activity in acidic medium have been tested against bacteria E.coli and S.aureus.

Keywords: Pd(II) , 1-subsyituted phenyltetrazoline – thione ,1-p-EPT5TH(1-para-ethoxyphenyltetrazolinne-5-thione) , PH , MIC (Maximum Inhibition Constant) , SM(Streptomycin – Standard drug against bacteria)

Thesis:
[1]. Santosh Kumar,Ph.D.Thesis 2009
[2]. Bharati , Ph.D. Thesis , 2013
Journal Papers:-
[3]. Abhay Kumar ,Manoj Ranjan and Santosh Kumar ;Napier Indian Advanced Research Journal of Sciences , ISSN-0975-1726 , Vol. 3 , 73-75 ,Dec. – 2009
[4]. Manoj Ranjan,Santosh Kumar and Abhay Kumar ; Napier Indian Advanced Research Journal of Sciences , ISSN-0975-1726 , Vol. 3 , 103-105 ,Dec. – 2009
[5]. Manoj Ranjan ,Santosh Kumar and Abhay Kumar ; J.Chemtracks , 11 (2) , 491-492 , 2009

Abstract: This study presents the synthesis of thienyl-isoxazoles 5(a-h) through (3+2) annulation of chalcones 3(a-h) with hydroxylamine hydrochloride 4 in freshly extracted citrus juice medium under reflux conditions. Structure proofs of synthesized new isoxazoles were provided by spectral and elemental analysis. Preliminary studies on antifungal and DPPH radical scavenging activity shows that compounds 5b and 5c with fluro and chloro substitutions have excellent inhibition (12.5-50.0 μg/mL) against the tested fungi species, and better DPPH radical scavenging abilities (20.70-45.26% and 23.91-46.16%) comparable with the standard used.

Keywords: Antifungal, annulation, chalcone, cyclocondensation, radical scavenger.

[1]. S.M. Gomha, K. Khalil, H. Abdel-Aziz, M. Abdalla, Heterocycl. 91, 1763 (2015).
[2]. K. Kumara, N. Shivalingegowda, L.D. Mahadevaswamy, A.K. Kariyappa, N.K. Lokanath, Chem. Data Coll. 9-10, 251 (2017).
[3]. B.C. Manjunath, M. Manjula, K.R. Raghavendra, K. Ajay Kumar, N.K. Lokanath. Acta Cryst. Sect. E, 70, o261 (2014).
[4]. M. Govindaraju, G. Vasanth Kumar, B.N. Mylarappa, K. Ajay Kumar, IOSR J. App. Chem., 2, 1 (2012).
[5]. K. Ajay Kumar, K. M. Lokanatha Rai, K. B. Umesha, J. Chem. Res. (S), 436 (2001)..

Abstract: The current study depicts that the even slight presence of easily oxidizable substance like thio-urea, ascorbic acid, hydrazine, alcohols etc. interfere in the estimation. In such case higher recovery was obtained because the compound reacts with the reagent. Therefore, the presence of such substances was avoided. Excipients like starch, calcium carbonate, sodium carbonate, cellulose, magnesium tri-silicate, tri-calcium phosphate and gum acacia if present in the pharmaceutical preparations do not interfere in the estimation.
Background: The antihypertensive are a class of drugs that are used to treat hypertension (high blood pressure). Evidence suggests that reduction of the blood pressure by 5 mmHg can decrease the risk of stroke by 34%, of ischaemic.....

Key Word: Antihypertensive drugs, Pharmacological classification

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Abstract: The estimation of groundwater renewability and usability is a crucial task in groundwater research and management. In this study, sixty seven groundwater samples were collected from the Eocene groundwater aquifer of southwestern ElMinia, Egypt; these were subjected to both hydrochemical (major ions and trace elements) and isotopic (18O, D, 3H and 14C) analysis to determine the groundwater renewability and usability which embed the qualitative and quantitative themes of the resource. It was revealed that the groundwater under study gets two sources recharge, from both present day Nile water system and upward leakage of deep seated Paleowater through faults, joints and factures. The Paleowater contribution in the samples......

Key Words: Renewability, Isotope Hydrology, Water Quality, Health Hazard

[1]. Abdel Moneim, A.A., Fernández-Álvarez, J.P., Abu El Ella, E.M. and Masoud, A.M. (2016) Groundwater Management at West El-Minia Desert Area, Egypt Using Numerical Modeling. Journal of Geoscience and Environment Protection, 4, 66-76. http://dx.doi.org/10.4236/gep.2016.47008
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Abstract: In the present investigation water quality monitoring of river Ganga at Riawala, District Haridwar was studied during the period November 2008 to October 2009. Water quality parameters studied were Temperature, pH, free CO2, D.O., B.O.D, T.D.S., Acidity, Alkalinity, Hardness, Calcium, Chlorides and Conductivity. Statistical analysis of the analytical data was computed in the table.

Key Words: Physicochemical parameter, River Ganga, Water quality

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Abstract: The Nickel oxide Nanoparticles were synthesized from Nickel Nitrate Hexahydrate aqueous solution under the chemical method at 90°C. The average crystallite size was calculated from De-Bye Scherrer's equation. FESEM, EDX, XRD were used to characterize the structural features of the product. FTIR spectra confirmed the adsorption of the Nickel oxide nanoparticles. In addition, UV-visible absorption spectra were employed to estimate the band gap energy of the Nickel oxide nanoparticles. This method may be suitable for large scale production of Nickel oxide nanoparticles......

Key Words: Nickel Oxide Nanoparticles, SEM, EDX, XRD,FTIR,UV-Vis, Disc diffusion method, Cytotoxicity

[1]. Sheena P. A, Priyanka K.P, Aloysius Sabu N, Sabu B, Varghese T. Effect of calcination temperature on the structural and optical properties of nickel oxide nanoparticles. Phys Chem Math 2014;5:441–449.
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Abstract: The current study shows that taking advantage of the oxidizing capacity of ammonium metavanadate (v) with certain organic compounds, the oxidation of certain sugars was studied an accurate and quantitative procedure has been described for the determination of certain mono and disaccharides on micro scale. 1-5 mg of sample was allowed to react with excess of ammonium metavanadate (v) for about 30 (monosaccharides) to 40 (disaccharides) minutes at 40°C temp. The unreacted ammonium metavandate (v) was titrated against ferrous ammonium sulphate using N-Phenylanthranilic acid as indicator. A blank was also run under identical conditions and the recovery of the sugars was calculated. For establishing exact reaction condition following variables were carried out......

Key Word: Sugars, Ammonium Metavanadate Reagent, Medicinal Compounds

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Abstract: The current study depicts that the determination of methanol, ethanol, n-propanol, n-butanol, 3-pentanol, propane 1,2 diol, butane 1,3 diol, butane 2,3 diol, triethylene glycol and tetraethylene glycol with the use of V(v) reagent. Aliquots containing 1-9 mg of sample are allowed to react with 1 ml of 0.3 N, V(v) reagent and 5 ml of 10 N H2S04 at water bath maintaining 40°C thermostatically for 20 minutes. A blank experiment also run under identical condition using all the reagent except the sample. The recovery of the sample was calculated. S.D. and C. V. was also calculated. Effect of various variables and interfering substances has also been studied and possible course of reaction was suggested on the basis of stoichiometry as well as previous literature available of the.....

Key Word: Ammonium Metavanadate Reagent, Micro Determination, Medicinal Compounds

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Abstract: Copper–Aluminium Hydroxyapatite (Cu-HAP) catalyst was effectively used in the C-N bond coupling of aryl bromides (1a-h) and 5, 5-dimethylhydantoin (2) without any ligand and base, to afford corresponding N-Alkylated aromatic amines (3a-h) in good yields. The catalyst was quantitatively recovered from reaction mixture by simple filtration and reused for four cycles with consistent activity.

Key Word: Nilutamide · 5, 5-dimethylhydantoin · Copper–Aluminium Hydroxyapatite (Cu-HAP) · C-N coupling · Aryl bromides.

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Abstract:The current study shows that the rate of oxidation of benzoyl acetone (BA) is found to be slower, than that of acetyl acetone while benzoylacetone has higher enolic content rather than acetylacetone (AA). This fact
may be explained by the extra stability of formation of chelate-ring with intramolecular hydrogen bonding of enol of acetyl acetone, conjugate effect, resonance and steric hindrance. Steric hindrance may cause retarding
(slower) rate of oxidation.Itexhibit the capacity of formation of chelate-ring, but due to be –O-C2H5 group more electrons are released in competition to methyl group of AA and therefore the amount of the enol content is
decreased......

Key Word: Kinetics, Oxidation, Acetyl acetone, Benzoyl acetone, N-Chlorosaccharin, Acetic Acid

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